Rspack blogs
Check here for the latest articles and release announcements about Rspack.
Announcing Rspack 1.6
October 30, 2025
Rspack 1.6 has been released with better ESM output, enhanced tree shaking, support for the import defer syntax, stabilized layers feature, and default barrel file optimization.
Announcing Rspack 1.5
August 26, 2025
Rspack 1.5 has been released, introducing barrel file optimization and constant inlining optimization, also adding a built-in file system watcher, a virtual modules plugin, and a Rust extension mechanism, while dropping support for Node.js 16.
Bundler tree shaking principles and differences
July 31, 2025
Tree shaking has become an essential part of modern front-end bundling. This article provides a brief overview of tree shaking principles across different bundlers and explores their key differences.
Announcing Rspack 1.4
June 26, 2025
Rspack 1.4 has been released with support for running in the browser, incremental builds enabled by default, faster SWC, smaller bundles, and new features including the CssChunkingPlugin.
Rspack joins the Next.js ecosystem
April 10, 2025
Today, we’re excited to introduce next-rspack, a community-driven plugin bringing direct Rspack support to Next.js. This integration offers a fast, webpack-compatible alternative for teams not yet ready to adopt Turbopack.
Announcing Rspack 1.3
March 28, 2025
Rspack 1.3 has been released with support for detecting circular dependencies, building HTTP imports, and referencing AMD modules. It introduces a new lazy compilation middleware, while also improving code splitting performance, output bundle size, and memory usage.
Announcing Rspack 1.2
January 21, 2025
Rspack 1.2 has been released, introducing experimental persistent caching, a faster code splitting algorithm, and Yarn PnP support.
Build systems and bundlers
January 7, 2025
This article will briefly introduce the content of the "Build Systems à la Carte: Theory and Practice" paper and attempt to summarize bundlers from the perspective of build systems.
RSC and Server Action bundle practice
January 6, 2025
This article introduces the construction practices of RSC (React Server Components) and Server Action in React, including their concepts, rendering methods, bundling process in webpack, and how Turbopack bundles multiple environment modules in a module diagram.
Announcing Rspack 1.1
November 7, 2024
Rspack and Rsbuild 1.1 has been released, significantly improve the performance of cold starts and incremental builds. It also improve the built-in HTML plugin and types of configuration options.
Announcing Rspack 1.0
August 28, 2024
Today Rspack has reached a new milestone - 1.0. This means that Rspack is production-ready, covers most of webpack's APIs and features, and is now prepared to support more users.
Announcing Rspack 1.0 Alpha
June 29, 2024
Rspack 1.0 alpha is now available on npm!
Before releasing Rspack 1.0 stable version, we will test for 1~2 months to improve the API stability and reliability of v1.0 and to verify its impact on downstream projects.
Announcing Rspack 0.7
May 28, 2024
Rspack 0.7 has been released, featuring support for lazy compilation, which can significantly improve the dev startup performance of large applications. It also introduces a brand-new css-module-lexer, increasing CSS bundling speed by 4 times.
Deep dive into Rspack tree shaking
April 17, 2024
This article primarily focuses on understanding the concept of Rspack & webpack tree shaking.
Announcing Rspack 0.6
April 10, 2024
Rspack 0.6 is out, with built-in support for mini-css-extract-plugin and new tree-shaking enabled by default.
Webpack chunk graph algorithm
January 12, 2024
This article introduces the chunk strategy of webpack. Through this article, you can understand when a chunk will be generated in the code and how to reduce the chunk size, etc.
Announcing Rspack 0.5
January 09, 2024
Rspack 0.5 is out, supporting Module Federation and removing the default SWC transformation.
Module Federation added to Rspack
January 09, 2024
The latest Rspack 0.5.0 introduces the highly anticipated Module Federation, which is detailed in this article.
Webpack CSS order issue
November 29, 2023
This article shows how the CSS order problem occurs in webpack and how to solve it.
Announcing Rspack 0.4
November 02, 2023
Rspack 0.5 is out, removing support for some builtin features.
Deep dive into Top-level await
October 26, 2023
In this article, we will take a closer look at aspects such as the specification, toolchain support, webpack runtime, and profiling of Top-level await.
Design trade-offs in bundler
August 30, 2023
This article explains why we decided to develop Rspack and what trade-offs we made during the design process.
Announcing Rspack 0.3
August 24, 2023
Rspack 0.3 is out, adding support for web workers and the builtin:swc-loader.
Announcing Rspack 0.2
June 02, 2023
Rspack 0.2 is out, introducing many new features, such as support for realContentHash, DataURI, and the ESM format, and more.
Announcing Rspack 0.1
March 06, 2023
Rspack has officially been released!